Device for sealing sliding windows, sliding doors and the like

ABSTRACT

Device for sealing sliding windows, sliding doors and the like having a plurality of casements which are displaceable in a single plane includes seal carriers mounted within the space formed in the casement frame and constrained to move in a direction perpendicular to the displacement direction of the casement, and sealing strips carried by the seal carriers in the space and extending in the displacement direction of the casement.

United States Patent [72] Inventor Ernst Pudenl 2,537,296 1/1951 Yeakel49/306 lm Haferkamp 1,4811 Leopoldshohe, 2,786,240 3/1957 Tobiasz 49/425Germany 2,931,434 4/1960 Steel I. 160/91 [21] Appl. No. 766,9182,996,769 8/1961 Kunkel 49/307 [22] Filed Oct. 11,1968 3,276,167 10/1966Bus et a1. 49/485 [45] Patented June 8, 1971 3,325,944 6/1967 Crain l.49/306X [32] Priority Oct. 16, 1967 3,442,052 5/1969 Levine 49/425 g ggg 2 Primary Examiner David J. Williamowsky Assistant Examiner-Philip C.Kannan Attorneys-Curt M. Avery, Arthur W. Wilfond, Herbert L. 541 DEVICEFOR SEALING SLIDING WINDOWS, and Dame Tlck SLIDING DOORS AND THE LIKE 4Claims, 5 Drawing Figs.

[52] U.S.Cl 49/420, 49/306, 49/425, 160/40, 160/90 [51] Int. Cl EOSd13/02 ABSTRACT; Device for Sealing sliding windows Sliding doors [50]Field of Search 1. 49/303, and the like having a plurality f easementswhich are 306, 307,308,313,235,420, 425,485; 160/89, placeable in asingle plane includes seal carriers mounted 9031,40 within the spaceformed in the easement frame and constrained to move in a directionperpendicular to the displace- [56] References Cited ment direction ofthe casement, and sealing strips carried by UNITED STATES PATENTS theseal carriers in the space and extending in the displace- 3,295,2571/1967 Douglass 160/40 ment direction ofthe casement.

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PATENTEU JUN 8 I971 SHEET 3 OF 3 DEVICE FOR SEALING SLIDING WINDOWS,SLIDING DOORS AND THE LIKE My invention relates to device for sealingsliding windows, sliding doors and the like, and more particularly ofthe bypass wherein each casement is displaceable in a single plane.

The heretofore known sliding windows are provided with rigidly built-inseals having sealing surfaces along which the upper and lower edges ofthe casement slide when the window is being opened. In the GermanGebrauchsmuster l,l9l9,724 such a sliding window is shown whereinsealing profiles or sections are secured below the tracks or guide railson crosspieces that are part of a section of the blind frame of thewindow and are formed of two ribs.

Sliding windows and doors which are lifted are also known wherein thecasement or the sliding door respectively is raised by means of a leversystem from the locked position thereof and is displaced by means ofbuilt-in rollers. Further, similar structures were known in the artheretofore wherein the sliding casements or sliding doors slide onrollers which travel into depressions formed in the guide rails whenplaced in locking position. With the heretofore known sliding windows ordoors which are displaced by means of lever systems, the sealing of therespective windows or doors is effected by pressing the rigidly built-inseals against portions of the blind frame. The functional capability ofthe upper horizontal sealing of the windows or doors is dependent,however, upon the precise assembly of the upper blind frame. As a resultof settling of a building or subsequent warping of the lintel of thewindow or the overhead beam of the door, the seal of the warped blindframe can no longer fit and thereby loses its effectiveness. A furtherdisadvantage of sliding windows and doors that are furnished withlifting mechanism is that the costs of the auxiliary devices are veryhigh. A considerable disadvantage of the lifting mechanism of theaforementioned type is that only two guide rollers can be employed,which limitation is particularly disadvantageous for windows ofrelatively heavy construction. A further disadvantage is that a greatamount of force is necessary in order to start the casement with itsentire weight moving from the rest (lowered) position thereof.

It is accordingly an object of my invention to provide device forsealing sliding windows, doors and the like, which avoids theaforementioned disadvantages of the heretofore known sliding windows anddoors.

It is a further object of my invention to provide such sealing device atreduced cost of materials and which will fully maintain its functionalcapability under unfavorable operations conditions.

With the foregoing and other objects in view, I provide in accordancewith my invention, a sliding window or sliding door of such constructionthat the horizontal lower and upper seals thereof, in a locked positionof the window or door, are brought yieldably into sealing position byspring-biasing action.

More specifically, I provide in accordance with my invention device forsealing sliding windows, sliding doors and the like having a pluralityof casements each displaceable in a single plane, comprising sealcarriers mounted within the space formed in the casement frame andconstrained to move in a direction perpendicular to the displacementdirection of the casement; and sealing strips carried by the sealcarriers in the space and extending in the displacement direction of thecasement.

It is a further object of my invention to provide such sealing devicewherein the functional capability of the sealing elements will always beensured.

It is yet another object of my invention to provide such a sealingdevice which will not require any additional lifting and displacingmechanisms nor any manually actuable fixtures for that purpose since thesliding easements or sliding doors move only in a single plane.

Other features which are considered as characteristic for the inventionare set forth in the appended claims.

The construction and method of operation of the invention, however,together with additional objects and advantages thereof will be bestunderstood from the following description of the specific embodimentwhen read in connection with the accompanying drawings in which:

FIGS. 1 to 3 are front elevational, top plan and side elevational viewsof a sash window constructed in accordance with my invention;

FIG. 4 is a much enlarged longitudinal sectional view of FIG. 3; and

FIG. 5 is a much enlarged fragmentary view of the lower left-hand sideof the casement shown in FIG. 1.

Referring now to the drawings, there is shown a sash window formed of ablind frame 1 (FIG. I) and a pair of sliding casements 2 and 3 which aredisplaceable by means of ball bearing support rollers 7 to 9 alongprofiled guide rails 5 and 6 (FIG. 2, 4 and 5). The blind frame 1 isassembled from a lower blind frame section 10, an upper blind framesection 11, as well as U-shaped lateral blind frame sections 12 and 13.The lower blind frame section (FIG. 4) is provided at the inner sidethereof with two pairs of longitudinal ribs 14, 15 and 16, 17, whichaccommodate the profiled guide rails 5 and 6 respectively therebetween.The upper blind frame section 11 is also constructed in the same manneras that of the lower section 10 and has longitudinal rib pairs 18 and 19which respectively receive therebetween guide rails 20 and 21.

The lower and upper profile shanks 22 and 23 of the casement 2 have anH-shaped cross section or profile, whereas the vertical profile shanks24 and 25 (FIG. 2) are of U-shaped cross section. The inner verticalprofile shank 25 is additionally provided with a hook-shaped profilesection 26 on the side thereof facing the easement 3. When the sashwindow is being closed, the hook-shaped profile section 26 of thecasement 2 catches in a corresponding hook-shaped profile section 27 ofthe easement 3, and can be additionally furnished with a nonillustratedsealing strip for the purpose of effecting better exclusion of air. Theprofile shanks 22 to 25 are provided with substantially U-shaped elasticseals 28, 29 and 30, 31, adapted to receive glass panes 32a and 32brespectively therein. The casement 2 is provided with relatively widesupport rollers 7 mounted on shafts 33 that are secured in U shapedbearing stands 34 respectively. Each bearing stand 34 is screwed to atransverse rib 35 of the respective casement section. As shown in FIG.4, a U-shaped seal carrier 36 is displaceably disposed under thetransverse rib 35 of the lower casement section and is guided by sideportions 37 and 38. Both shanks 39 and 40 of the seal carrier 36 arereinforced and widened at the free ends thereof and are respectivelyformed thereat with a longitudinal groove 41, 42 serving for receivingtherein elastic sealing strips 43 and 44 respectively. The seal carrier36 is under the biasing influence of several compression springs 45 and46 which abut at one end in a groove 47 formed in the transverse rib 35,and is carried by two or more lifting rollers 48 and 49 havingrelatively narrow bearing surfaces and mounted on respective shafts 50and 51 secured in the shanks 39 and 40.

The somewhat curved peakroof shaped guide surface 52 of the guide rail 5on which the aforementioned wide support rollers 7 of the slidingcasement 2 and the lifting rollers 48 and 49 of the seal carrier 36slide during the displacement operation of the casement is provided withdepressions 53 and 54, fitting or accommodating to the width and theradius of the narrow lifting rollers 48 and 49, into which the liftingrollers 48 and 49 run, when the sliding casement 2 is closed. In theclosed condition of the sliding casement 2 the seal carrier 36 ispressed downward under the biasing action of the compression springs 45and 46 so that the sealing strips 43 and 44 seal the respective airgaps55 and 56 between the guide rail 5 and the sidewalls 37 and 38. As soonas the sliding casement 2 is opened by being laterally displaced, thelifting rollers 48 and 49 run out of their depressions 53 and 54 andonto the curved guide surface 52, thereby pressing the sealing carrier36 in an upward direction as viewed in FIG. 4, so that the sealingstrips 43 and 44 are raised from the guiding surface.

In a similar manner, the guide rail 20 of the blind frame section 11 isprovided with corresponding depressions 57 and 58 into which the liftingrollers 59 and 60 run when the sliding frame 2 is being closed. Thelifting rollers 59 and 60 are mounted on shafts 61 and 62, respectively,which are end supported in the shanks 63 and 64 of the upper sealcarrier 65, as viewed in FIG. 4. The reinforced ends 66 and 67 of theshanks 63 and 64 are formed with grooves in which sealing strips 68 and69 are respectively received. The upper seal carrier 65 is guidedlaterally by means of the walls 70 and 71 and is subjected to thebiasing influence of several leaf springs 72 and 73 which continuallymaintain the lifting rollers 59 and 60 in engagement with the guidesurface of the profiled section 74 of the guide rail 20. The liftingrollers 59 and 60 run into the depressions 57 and 58, respectively asthey are moved into the closing position of the of the window. The leafsprings 72 and 73 then force the seal carrier 65 upwardly, as viewed inFIG. 4, and the sealing strips 68 and 69 then assume the task of sealingboth the upper and lower sides of the casement. The sliding casement 3and the guide rail 6 provided therefor, as well as the guide rail 21,are constructed in precisely the same manner as the aforementionedcasement 2 and the guide rails associated therewith. The slidingcasements 2 and 3 are shown, respectively, in open and closed positionin FIG. 4.

In order to avoid subsequent machining of the depressions 53 and 54 ofthe guide rails and 6 on the one hand and of the depressions 57 and 58of the guide rails and 21 on the other hand, which depressions arefurnished with an arcuate profile, into the completed profile rods,suitably formed members 75 (according to the embodiment shown in FIG. 5)made of light metal, plastic material or the like are clamped and, ifnecessary, are firmly secured by screws or adhesive to the correspondingprofile rods so as to form the completed guide rollers.

For particularly wide sliding easements and hence using relatively greatweight, tandem rollers or more than two roller pairs can be employedinstead of rollers 7 or 8, 9, in order to maintain the specific bearingor applied forces of the rollers as small as possible. Since the guidesurfaces of the rollers 7, 8, 9 are of considerably wider constructionthan those of the lifting rollers 48 and 49, the narrow depressions 53and 54 do not hinder the sliding operation because the rollers 7, 8, 9roll thereover without changing their relative vertical position.

The sealing function of the lower sealing strips 43 and 44 as well as ofthe upper sealing strips 68 and 69, as viewed in FIG. 4, is alwaysensured in the condition wherein the associated guide rollers 48 and 49on the one hand and 59, 60 on the other hand have run into therespective depressions by means of the compression springs 45 and 46acting together with the intrinsic weight of the sealing carrier 36 orby means of leaf springs 72, 73 which have a relatively high springforce constant. For this purpose, the sealing strips 43 and 44 on theone hand and 68 and 69 on the other hand are preferably ofcircularconstruction on the side thereof engageable with the guide surfaces ofthe guide rails, so that an especially good deformation thereof occurs,conforming to the surfaces which are to be sealed. The seal carriers 36,65 can preferably be combined with the sealing strips 43 and 44 on theone hand and 68 and 69 on the other hand by making them in one piecefrom plastic material having partially hard and soft structuralportions.

By means of flexibly disposed seal carriers 36 and 65 and the deformableand inherently resilient sealing strips 43 and 44 on the one hand and 68and 69 on the other hand, a trouble-free seal is achieved even in caseof large installation tolerances of the blind frame sections. Also inthe event of subsequently occurring settling of the building, thestresses produced thereby, which can have an undesirable effect upon theinstalled sliding window, will not impair the functional capability ofthe sealing members.

Since the sealing carriers 36 and 65 and the members associatedtherewith are preferably formed of light metal or plastic material andare therefore of relatively lightweight, a relatively easy lifting ofthe sealing carriers 36 and 65 can be achieved when opening the slidingframes 2 and 3, respectively, by suitably curing the guide rails onapproaching and leaving the depressions 53 and 54 on the one hand and 57and 58 on the other hand. The displacing operation proper for relativelylarge and heavy sliding easements can therefore be relatively easilyeffected. In the closed position, the sliding casements 2 and 3 arelatched by nonillustrated well-known locking devices. These lockingdevices are preferably constructed so that the sliding easements 2 and 3can be fixed in any desired position. It might also be noted that bymeans of the aforedescribed sliding window a draft-free ventilation canbe effected by a slight lateral displacement of the sliding casements 2and 3 so that the sealing strips 43 and 44 on the one hand and 68 and 69on the other hand are raised slightly from the position wherein they areengaged with the guide rails surfaces and so as to thereby permit thecirculation of air into the interior of the building.

Also sliding doors and the like instead of the aforedescribed slidingwindows can be furnished in a similar manner with the aforedescribedsealing members, in which case only the lower guide rails have to meetspecial requirements.

The invention is not limited only to sliding windows, sliding doors orthe like, which have easements that are movable in horizontal direction,but can also be used obviously for devices with vertically displaceableeasements.

The scope of my invention also encompasses such sliding windows, slidingdoors and the like wherein the raising and lowering of the seal carriersand the seals carried thereby are effected by manually serviceablemechanisms which can, for

example be coupled with the locking devices.

I claim:

1. Device for sealing sliding windows, sliding doors and the like havingat least one casement displaceable in a single plane, comprising sealcarrier means mounted within spaced formed in upper and lower profileshanks, respectively, of the casement frame and constrained to move in adirection perpendicular to the displacement direction of the casement;sealing strip means carried by said seal carrier means in said space andextending in the displacement direction of the casement, said sealcarrier means being actually movable perpendicularly to the displacementdirection of the casement in a locking position of the latter fordisplacing said sealing strip means from a nonsealing position thereofinto a position wherein it seals the casement, spring means supported bythe casement frame and biasing said seal carrier means in said directionperpendicular to the displacement direction of the casing, fixed guidemeans extending in said displacement direction of the easement adjacentsaid casement frame, and lifting roller means supporting said sealcarrier means and rollable along said fixed guide means, said liftingroller means cooperating with said fixed guide means for determining theposition of said seal carrier means.

2. Device according to claim 1, wherein said fixed guide means comprisesa guide rail having a profile formed with at least one depressiontherein, said lifting roller means being receivable in said depressionso as to displace said seal carrier means in substantially verticaldirection.

3. Device according to claim 2, wherein said guide rail is subdivided bya member formed with said depression whereby said seal carrier means areraised and lowered.

4. Device for sealing sliding windows, sliding doors and the like havingat least one casement displaceable in a single plane, comprising sealcarrier means mounted within space formed in the easement frame andconstrained to move in a direction perpendicular to the displacementdirection of the easement, sealing strip means carrier by said sealcarrier means in said space and extending in the displacement directionof the casement, spring means supported by the easement frame andbiasing said seal carrier means in said direction perpendicular to thedisplacement direction of the casing, fixed guide means extending insaid displacement direction of the casement adjacent said casementframe, lifting roller means supporting said seal carrier means androllable along said fixed guide means, said lifting roller meanscooperating with said fixed guide means for determining the said supportrollers, without variation in the vertical position thereof, and saidlifting roller means supporting said seal carrier means are movable onthe same plane, said lifting rollers means, in closing position of theeasements, being rollable into said depression.

1. Device for sealing sliding windows, sliding doors and the like havingat least one casement displaceable in a single plane, comprising sealcarrier means mounted within spaced formed in upper and lower profileshanks, respEctively, of the casement frame and constrained to move in adirection perpendicular to the displacement direction of the casement;sealing strip means carried by said seal carrier means in said space andextending in the displacement direction of the casement, said sealcarrier means being actually movable perpendicularly to the displacementdirection of the casement in a locking position of the latter fordisplacing said sealing strip means from a nonsealing position thereofinto a position wherein it seals the casement, spring means supported bythe casement frame and biasing said seal carrier means in said directionperpendicular to the displacement direction of the casing, fixed guidemeans extending in said displacement direction of the casement adjacentsaid casement frame, and lifting roller means supporting said sealcarrier means and rollable along said fixed guide means, said liftingroller means cooperating with said fixed guide means for determining theposition of said seal carrier means.
 2. Device according to claim 1,wherein said fixed guide means comprises a guide rail having a profileformed with at least one depression therein, said lifting roller meansbeing receivable in said depression so as to displace said seal carriermeans in substantially vertical direction.
 3. Device according to claim2, wherein said guide rail is subdivided by a member formed with saiddepression whereby said seal carrier means are raised and lowered. 4.Device for sealing sliding windows, sliding doors and the like having atleast one casement displaceable in a single plane, comprising sealcarrier means mounted within space formed in the casement frame andconstrained to move in a direction perpendicular to the displacementdirection of the casement, sealing strip means carrier by said sealcarrier means in said space and extending in the displacement directionof the casement, spring means supported by the casement frame andbiasing said seal carrier means in said direction perpendicular to thedisplacement direction of the casing, fixed guide means extending insaid displacement direction of the casement adjacent said casementframe, lifting roller means supporting said seal carrier means androllable along said fixed guide means, said lifting roller meanscooperating with said fixed guide means for determining the position ofsaid seal carrier means, said fixed guide means comprising a guide railhaving a profile formed with at least one depression therein, saidlifting roller means being receivable in said depression so as todisplace said seal carrier means in substantially vertical direction,and support rollers rollably supporting the casement on said fixed guiderail, said guide rail being so profiled and said depression being soformed that said support rollers, without variation in the verticalposition thereof, and said lifting roller means supporting said sealcarrier means are movable on the same plane, said lifting rollers means,in closing position of the casements, being rollable into saiddepression.